Fusion-io Inc.’s tight relationship with Facebook Inc. could make its initial public offering a hot issue. But investors could get burned if long-term growth doesn’t match expectations. A lower-profile memory start-up, Violin Memory Inc., runs cooler and might attract the smart money over time.

Fusion-io, which filed for an IPO earlier this month, makes enterprise-grade, flash-based solid-state drives that provide short-term cache memory directly to a single server to improve processor utilization and reduce latency. Read More »

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